Preheat oven to 375F.
Stir flour and salt together with fork.
Lightly beat oil in just until combined.
Add water until dough is consistency or heavy playdough.

Make into 2 snowballs, one larger than the other.
Press rolled out dough into bottom of 9x13 and partway up the
sides.
Gently mix together the frozen blueberries with sugar and cup of
flour.
Pour into pan.

Cut up butter and place on berries.
Take 2 pieces of wax paper.
Put dough between 2 sheets and roll out keeping most of
pressure in the middle so the ends don't split.
Roll out and put over top of pan.
Pull off wax paper.